Automobile band-brake attachment



March 18 1924. v a v v. R. CARLsoN AUTOMOBILE BAND BRAKE ATTACHMENT Filed Jar'i. 1e 1922 Patented Mar. id, 1924.

VICTOR R. OARLSON, OF DULUTH, MINNESOTA, ASSIGNOR OF ONE-HALF TO ANTON V HAIfISON', O1? DULUTH, MINNESOTA.

To all whom it may concern:

Be t known. that I, Vroron R. CARLSON,

a citizen of the United States, residing at- The principal object is to produce a separable shaft of this character for convenience in removing or replacing a sectional band without the necessity of disassembling the transmission housing.

Other objects and advantages will appear in the further description of the invention.

Referring to the accompanying drawing forming part of this application in which like reference characters indicate like parts:

Figure 1 is an elevation of one of the improved low speed shafts and adjusting screws as it would appear assembled in the transmission,

Figure 2 is a plan view of the central portion of Figure 1, and

Figure 3 is a central vertical sectional view through Figure 2.

1 and 2 represent the opposite spaced side walls of the removable portion of the transmission housing of an automobile, with the usual inwardly projecting hub portions thereupon and 3 represents a portion of the low speed band adjusting shaft to which reciprocal motion is imparted by the manipulation of the foot pedal in the usual manner not shown. 4: represents the hollow adjusting screw which is externally threaded into the side wall 2 of the housing and carries a jam nut 5 for holding it in any desired position.

ing screw as commonly found the shaft 3 continues across the space over the transmission drums, and its free end is telescopic within the adjusting screw 4, for-which purpose the adjusting screw is greater in diameter than the shaft.

This same assemblage exists in my improved combination except that the shaft 3 is cut off at 6, the stub end thereof being slightly rounded as at 7 to conveniently In this combination of shaft and adjust- Application filed January it, 1922. Serial m. 529,635.

center itself within the concaved end 8 of the intermediate shaft 9. The opposite end of this intermediate section or piece of shaft is mounted within the adjusting screw 4: in the usual manner, except upon one circumferential face thereof is formed a keyway or channel 10 longitudinally ,thereof, terminating a short distance from either end, and on one edge of the end of the adjusting screw 4 is formed a key 11 bythe cutting inwardly of two spaced parallel slots so that after the insertion of the intermediate section 9'into the adjusting screw 43 the key may be struck inwardly so as to be engaged within the key-way or channel 10, thus acting as a guide and keeper for said intermediate section of shaft.

Before the section 9 is placed within the adjusting screw 4:, an expansive spiral spring 12 is placed within the bore of the adjusting screw and the shaft 9 is obliged to contact samefor its entrance, thus being automatically held in its fully extended position b the action of said spring.

With this device the action of the adjusting screw in respect to the lugs 13 and 1a of the band is identical with that of the ordinary mechanism and the reciprocal action of the two part shaft thus formed is identical with that in the ordinary mechanism, except that the section 9 does not rotate during such action.

However when, for any reason, it becomes desirable to renew or replace the band which is controlled by such shaft and especially when the band is of the separable type such as illustrated in dotted lines, previously patented by me and now in practical use, all i that is necessary is to back out entirely the adjusting screw 4 which will carry with it the intermediate section of shaft 9 leaving only the stub end 3 of the pedal shaft extending over the drums, thus providing free and unobstructed room for such manipulation of the hand.

Havingthus described my invention, what I claim and desire to secure by Letters Patent, is:

1. Band adjusting means of the character described comprising a reciprocable separable shaft and longitudinally yieldable means for automatically holding the separable parts of the shaft abutting each other.

2. The combination with the transmission housing of an automobile, of a drum disposed Within the housing, a splitrbancl encircling the drum, and means having abeering upon the housing and engagement With the band for actuating the band into and out of clutching engagement With the drum, said,

means including a shaft comprising loosely connected (Jo-operating sections separable interlnedlate the ends of the band. for facilitating renewal of said band Within the housing.

In testimony whereof I hereunto afiix my signature in the presence of two Witnesses.

. VICTOR R. GARLSON. Witnesses: V

S. C. BRONSON, S. Gno. STEVENS. 

